By CBSBoston.com Staff

BOSTON (CBS) – Officials at Boston University say erector crew error is to blame for an accident that sent steel beams tumbling at a construction site.

Investigators found a 44-foot beam was not properly constructed, causing it to fall.

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Steel columns topple at Boston University construction site (WBZ-TV)

The falling beam created a dramatic domino effect that was captured on video.

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Two workers were hurt but released from the hospital the same day.

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Construction is continuing on BU’s new Center for Computing and Data Sciences, despite the incident.

CBSBoston.com Staff